Ventilating apparatus



Nov. 1, 1932.% A. w. STEWART 1,886,313

5 VENTILATING APPARATUS Filed May 20, 1931 3 Sheets-Sheet l 1 a y, M

'3 Sheets-Sheet 2 Filed May 20, 1931 FIG. 5.

Nov. 1, 1932.

A. W. STEWART VENTILATING APPARATUS Filed May 20, 193],

FIG]

3 Sheets-Sme t 3 Patented Nov. 1, 1932 UNITED STATES- PATENTjOFFlCEALEXANDER- WILLIAM 'fsrEwAit'r, or GLASGOW, soornANn.

VENTILATING APPARATUS Application filed m 20, 1931, Serial No.538,717,1ind in Great imam "June 12, ieao.

This invention relates to improvements in ventilating apparatus, beingparticularly concerned with an improved construction of air outletdevice for discharging directly into the atmosphere a stream of air atrelatively spon ing to the pressure within the air duct.

In warm weather it may be convenient to deliver the airstream at highvelocity to pro.- duce the effect of a punkah or of a propeller fan, itbeing understood that at all times the supply of fresh air into acompartment or the like is desirable in that it prevents stagnation ortemperature stratification in the space ventilated. In certaincircumstances, how- 25 ever, high velocity of delivery of the air maynot be desirable.

The present invention provides an improved device which permit of highvelocity delivery with directional control as well as low velocitydelivery of the air delivered.

Fig. 1 of the accompanying drawings indi cates diagrammatically the formof a free air jet from a directional air outlet device at typicalvelocity.

Fig. 2 is a similar view showing how the air jet is modified bydisposition of a fiat disc in front of the outlet of the device.

Fig. 3 is a similar view showing the efi'ect of increasing the distancefrom the device of the flat disc in question.

Figs. 4 and 5 each show in vertical section two air outlet devices withdeflectors accordin to the invention.

ig. 6 is a vertical section of a modification.

Fig. 7 is a plan of this modification.

It is to be understood that the air outlet device is fitted to an airbox or air duct, as disclosed, for example, in the specification of U.S. Letters Patent 1,559,057, dated October 27, 1925.

"of theaxis of the air passage 3 and parallel thereto -s fixed to theouter face of the ball 2 a pill r 4 to which is fixed a disc 5 ofsuitable diameter suitably spaced from the discharge end of the passage3 and constituting a deflector or diffuser for the air stream. Thepillar 4 may be rotatable in a bearing presented by a clamp 6surrounding an extension of the ball; or the disc may be rotatablearound the axis of the pillar, so that the disc ma be swung into aposition clear of the jet 0 air discharged through the passage 3.

In lieu of the fitting illustrated the pillar. may be screw-threadedinto the clamp or other provision may be made for adjusting the distanceof the disc from the outlet to give the desired conditions of airdelivery.

As shown, the disc is of compound structure comprisinga circular platecovered with a ply of felt, velvet or other soft fabric for thepurpose-of reducing or eliminating the noise of impact of air.

It will be observed that the socket 1 has a cup-like extension 8 actingas a valve which in a given position of the ball cuts oil the airdischarge through the air passage 3. 8

In the modified construction shown in ver tical section in Fig. 5, whichis otherwise similar to that shown in Fig. 4, volumetric control oi theair delivery is effected by adjustment of the valve 9 in the form of aspherical segment movable about the axis of the hand wheel 10.

With the disposition of the pillar 4 eccentric to and parallel with thepassageway the adjustment of the disc by the occupant of the compartmentbeing ventilated can be readily effected.

In the further modified construction shown in vertical section and in.plan in Figs. 6 and 106 7, respectively the pillar 4' 5' is fitted to te socket 1'.

What I claim is In ventilating apparatus, an air outlet devicecomprising, in combination, a ball socket, a ball member penetrated byan air pascarrying the disc sageway and universally adjustable in saidsocket, a clamp engaging said ball member, a pillar fittted to saidclamp, said pillar being disposed external to and parallel with saidpassageway in all positions of adjustment of said ball member in saidsocket, and

a fiat deflector rotatable about the axis of said pillar to occupy aposition intercepting the stream of air delivered through saidpassageway and rotatable to occupy a position out of re ister with saidassageway.

n testimony w ereof I have signed my name to this specification.

ALEXANDER WILLIAM STEWART.

